Thread-board for spinning-frames.



PATENTED MAY 3, 1904.

J. B. PREST.

THREAD BOARD FOR SPINNING FRAMES.

APPLICATION FILED PEBA, 1904.

2 SHEETS-SHEET 1.

N0 MODEL.

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J E. PREST. THREAD BOARD FOR SPINNING FRAMES.

APPLICATION FILED FEBA, 1904,

2 SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES Patented May 3, 1904.

PATENT ()FFICE.

JOHN E. PREST, OF WORCESTER, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 758,933, dated May 3, 1904.

Application filed February 4, 1904. Serial No. 191,968. (No model.)

To all whom it may concern.-

Be it known that I, J OHN E. PREST, a citizen of the United States, residing in WVorcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Thread-Boards for Spinning-Frames, of which the following is aspecification.

This invention relates to a stop or means for holding the independent thread-boards in a substantially horizontal position, to the construction of the thread-guides with relation to the thread-boards, whereby the guides are prevented from turning or twisting, and to the mechanism for lifting or swinging up the thread-boards.

The nature of the invention is fully described in detail below and illustrated in the accompanying drawings, of which- Figure 1 is a plan View illustrating my invention with the thread-boards in their normal horizontal position. Fig. 2 is an elevation showing the thread-boards in a raised position. Fig. 3 is an end View with the thread-boards down. Fig. i is a vertical section taken through one of the thread-boards when in a raised position. Fig. 5 is a section taken on line 5, Fig. 1. Fig. 6 is a view of the under side of one of the thread-boards, showing a modification. Fig. 7 is a section taken on line 7, Fig. 6. In Figs. 2 and 7 portions of the thread-guide guards are represented as broken out.

Similar letters of reference indicate corresponding parts.

Referring to the first five figures, a represents the roller-beam provided at the upper portion of its front side with the horizonal overhanging lip 6. Supported by and having its bearings in suitable brackets c is a rotative rod or shaft (Z, preferably flattened longitudinally at (Z to present a suitable surface for set-screws e, which secure the lifting-dogs on the shaft, said dogs each consisting of the hub or main portion g and oppositely-engaging portions g. The shaft (Z is provided with a suitable handle or operating-lever f.

It It represent a series of independent threadboards, preferably made of metal and having downwardly extending edges or flanges it.

These thread-boards are provided with sockets or tubular brackets Zr, through which the shaft (Z extends, and on which shaft the sockets and thread-boards freely swing.

it a represent the thread-guides extending through suitable openings 7/ in the front portions of the edges lb of the thread-boards, thence extending along and against the under side of the thread-boards, and with their inner ends or bent at substantially right angles and parallel with the thread-boards. A troughshaped cover or guard p is secured by suitable bolts and nuts q r to the under surface of each thread-board, said guard being shallow and with its central portion bearing against the under side of the thread-guide or, while the opposite sides or flanges p of the guide bear, respectively, against one side of the threadguide and the abutting end '11 of said threadguide, as illustrated in Fig. 2. The central or main portion, therefore, of the guard 2 holds the bent end n in such a manner that the thread-guide cannot possibly rotate or turn, while the portions p of the guide effectually prevent lateral movement. The thread-boards are lifted by means of the dogs g g, which are rigid on the rotative shaft (l. One dog may be located centrally under a thread-board, or it may be under the adjacent edges of two threadboards, as indicated in Fig. 2, and when the boards are down the dogs are out of contact with the thread-boards, as indicated in Fig. 3, in which the nearest dog is shown below the flanges of the thread-boards, and the farthest dog(which is centrally under the thread-board) is shown below the body of the board. None of these dogs, therefore, act in any manner as stops, but are simply lifting devices.

WVhen the thread-boards are down, they are all held in a nearly horizontal position by means of the overlapping lip b, which constitutes an integral stop for the thread-boards. In order that the leverage may not be too great, the thread-boards are fulcrumed or pivoted at quite a distance from the roller-beam by means of the comparatively long arms of the brackets 0. Thus the thread-guides are prevented from turning or twisting, the threadboards have their rear ends held down by a stop, which is common to all, and the threadboards are swung up by a rotative shaft provided with the lifting-dogs.

In the modification illustrated in Figs. 6 and 7 in place of the cover or guard 22 p a cover or plate .9, which corresponds to the portion 9 of the guard in the first five figures, is laid over the thread-board, its opposite edges resting on raised portions 25 integral with the thread-board and with the sockets thereon, said raised portions operating exactly like the portions 19, above described.

Having thus fully described my invention, whatI claim, and desire to secure by Letters Patent, is

1. In an apparatus of the character described, a roller-beam; a series of independent thread-boards pivotally supported in front of said roller-beam; and a lip extending outward horizontally from the, roller-beam and longitudinally therewith over the rear ends of the series of thread-boards, whereby said ends are held down inline and the thread-boards in the series are held at an even height and in a substantially horizontal position. I

2. In an apparatus of the character. described, aroller-beam; asubstantially horizontal rotative shaft supportedby. and in front of the roller-beam; a series of independent thread-boardssupported loosely on said shaft; a series of independent lifting-dogsrigid on the said shaft; a horizontal lip extending over scribing witnesses.

and along the rear edges of the series of independent lifting-dogs and holding them normally in line and in an approximately horizontal position; and means for rotating said shaft, whereby the independent lifting-dogs lift the independent thread-boards simultaneously out of the horizontal position in which they are normally held by said lip.

3. In an apparatus of the character described, the thread-board It provided with the downwardly-extending sides or flanges k, the front flange being provided with a suitable opening it; the trough-shaped guard 12, 9 secured to the under side of the thread-board,

made longer than it is wide, and extending rearward centrally from the front edge of the thread-board; and the thread-guide n extending through said opening along and next to the inner surface of one ofthe sides p of the guard and across and against the opposite side n, between the guard and the under surface of the thread-board, for the purpose set forth.

In testimony whereofI have signed my name to this specification in the presence of two sub- JOHN E. PREST.

Witnesses:

HENRY W. WILLIAMS, A. K. H001). 

